End disk for hammer mills



Oct. 22, 1929. I J sT 1,732,701

Em) DISK FOR HAMMER MILLS Filed June 29. 1928 INVENTUR:

* I JamesEEfi Patented Oct. 22, 1929 UNITED STATES PATENT OFFICE JAMES E. STINE, OF ALDAN, PENNSYLVANIA, ASSIGNOR TO PENNSYLVANIA CRUSHER COMPANY, OF NEW YORK, N. Y.,

A CORPORATION OF NEW YORK END DISK non HAMMER ivrILLs Application filed June 29,

My invention relates to crushing machinery of the hammer mill ty 3e, involving a suitable supporting frame or ody receiving a so-called cage or screen substantially semicircular in contour, and in which a rotor structure is arranged. Such rotor structure usually comprises a shaft carrying a series of suitably spaced disks, and a series of hammers carried by rods passing through said .lisks parallel with the shaft. The usual practice is to provide these rotor structures with annular end plates or disks to which the hammer-carrying rods are secured; said end plates together with the rod-carrying disks and their spacing members lying between a flange carried by the rotor shaft ad jaoent one end of the same and a nut adapted to a threaded portion of said shaft adjacent the opposite end of the same. a

The end plates or disks are usually provided with outwardly flanged rims which may be beveled and the position of the plates is such that the rims are subject to excessive wear by the material operated upon. l/Vhen worn, the usual practice has been to lift the rotor structure out of the frame of the mill, remove the rods, strip the disks, spacing rings and hammers from the shaft and renew the end plates or disks. This operation takes considerable time and is quite expensive.

The object of my present invention is to provide two-part end disks for the rotor structure; thepart subjected to the excessive wear being renewable when worn without disturbing the portion carried by the shaft and without removing the intermediate disks supporting the rods from which the hammers are hung. Such renewable part may comprise an outer flange only, and such flanged part may include the portion supporting the hammer-carrying rods.

A further object of my invention is to shrink the renewable flange portion upon the shaft-carrying portion of said end disks or plates.

And a still further object of my invention is to provide an end disk structure comprising a flanged hub member carried by the rotor shaft and a separable ring member supporting the rods and including a marginal flange,

1928. Serial No. 289,252.

which may be shrunk onto said hub member.

These and other features of my invention are more fully described hereinafter; reference being had to the accompanying drawings, in which:

Figure 1 is a view in elevation, more or less diagrammatic and partly in section, of a crushing machine of the hammer mill type to which end disks or plates constructed in accordance with my invention may be applied.

Fig. 2 is an enlarged View, partly broken away, of the end disk or plate of the type shown in Fig. 1 disposed at the end of the rotor shaft receiving the nut.

3 is a similar view of another form of end disk or plate within the scope of my invention. a

Fig. 4: is a perspective view of the end disk or plate shown in Fig. 3 in the separated condition, and

s Fig. 5 is a view similar to Fig. 3 illustrating an end plate or disk with a modified form of marginal flange, within the scope of my invention.

Fig. 1 illustrates one form ofcrushing machine to which my invention has been applied. The casing or frame is indicated generally at 1, within which is mounted a rotor shaft 2, journaled in suitable bearings 3, and said shaft may be driven by suitable means, for instance a belt, passing over a pulley such as indicated at 4, mounted on the end of shaft 2. The rotor shaft 2 is usually provided with a collar 5, which may be integral therewith,

while the opposite end receives a nut 6, andmovement with respect to the shaft by a As heretofore constructed, these end disks have been single elements and when the outer rims, usually beveled, have been badly worn;

such disks being subjected to excessive wear when in use, they must be renewed. Hereto fore, it has been necessary to remove the rotor structure from the frame and strip all of the end plates, rod-carrying disks, spacing rings and rods from the rotor shaft to permit such renewal, an operation that takes considerable time and is quite expensive.

I propose to overcome this objection by prcviding cctiona-lienddisks or plates. In the arrangement-illustrated in Figs. 1 and 2, I have shown end disks or plates 15, in which the ends of the rods 10 are mounted, provided with renewable marginal flange portions 16. For this purpose said end disks or Pla es are prsv de with annul r fla g s 15. P e era ly ece s d a .thei 'o t r arg n s indicated 'l5T-and t e rene able an a e tions .16 may b pp d to t e flange each section havingan annular rib or edgelti t ag the e ess .l These s cti n 1 y be shrunken or otherwise applied. It will be readily understood, therefore, that when these renewable flanged members are badly worn, they can be "renewed by the usual method of replacing elements which are shrunk into position, orin any other suitable manner, Wi ut d sm ntli g th n e or structure. 7

In this arrangement, thatportion of the end disk or plate carriedbythe shaft is apertured at 9 and9e for. the reception of theihammercarryi-ng rods '10, which may be retained in place by pins 102 two sets of apertures be- 111g usually provided in order. that the hammers may be adjusted radially with respect to thecage or screen when they become worn. In the present instance, the hammer-carry ing rods are shown .as mounted in the inner set of apertures which is the normal position when the mill is first put into use.

' Fig; 2 shows on a slightly larger scale, an end disk or plate .of the type illustrated in Fig. El, applied to the opposite end of. the.

shaft, that is to say, adj acent. the nut 6 which holds the several elements of the rotor structure in proper position upon the shaft; the. several rod-supporting disks and .spaci "a rings beingheld in position'by the key 2 1n the arrangement illustratedin Figs. 3 and 4, I mount upon the rotor shaft flanged huhniembers 18, receiving annularly flanged ring sections, which may be shrunk'onto said hub members; each of. said annularly flanged ring sections comprising an. annular web 19 having an inner flange '19 which fits over the flange of fixed hub members '18 carried by the shaft and an outer flange 19? which may be beveled or not as maybe'desired; said web 19 being aperturedat Qand 9., for the reception.

or'pas's'age ofthehammerQcarrying rods 10. The inner flange 1920f the renewable ring section is preferablyprovided With an annular rib or edge 19, which rests against the outer 'fafieof'thehub member and insures proper relation of the parts when they are assembled, as indicated in Figs. 3 and 5.

Fig. 5 illustrates a form of end disk or plate involving a slight modification in the shape of the annular ring or flanged section which is illustrated as having its outer flange 19 substantially parallel with the longitudinal axis of the rotor shaft.

lVhile I may secure the outer renewable section of my improved end disk or plate to the portion carried .by the shaft whether of the type illustrated in Figs. 1 and 2, or the type illustrated in Figs. 3, 4 and 5, in any approved manner, I prefer to heat the same and shrink it onto said shaft-carrying member; the parts being of such dimension as to permit such method of connection. hen worn. such section may be reheated and removed from the shaft-carrying member by simply releasing the rod connections, but without the necessity of removing said rods, their supporting disks, the spacing rings for said disks, or the hammers carried by said rods.

I claim:

1. The combination, with a crushing machine having the usual. cage or screen, a rotor shaft, rods operatively supported by said rotor shaft and hammers hung from said rods, of sectional end disks carried by said rotor shaft and supporting the ends of the rods from which said hammers are hung; said sectional end disks including removable rims which may be renewed when worn without removal of the end disks or other parts from the rotor shaft.

2. The combination, in a crushing machine having the usual cage or screen, a rotor shaft, rods operatively supported by said. rotor shaft and hammers hung from said rods, of two-part end disks carried by said rotor shaft; one part of each of said end disks being carried by the rotor shaft and the other part of each disk constituting a renewable rim being reinovably secured to the partcarried by the rotor shaft and detachable and replaceable without removal of the end disks or other parts from the rotor shaft, and said rods from which said hammers are hung being scoured to the removable rim portions of said end disks.

3, The combination, with a crushing machine having the usual cage or screen, :rrotor shaft, rods operatively supported by said rotor shaft and hammers hung from said rods, of separable enddisks carried by said rotor shaft including body portions and removable annular rims shrunk upon the body of said end disks which may be renewed when worn without removal of the other parts from the rotor shaft; the rods from which said hammers are. hung being secured to said end di i. The Combination, with crushing machinery of the hammer mill type having the usual cage or screen, a rotor shaft, spaced disks carried by said rotor shaft, rods carried by said disks, and hammers carried by said rods, of sectional end disks carried by said rotor shaft to which said rods are secured; said end disks comprising hub members detachably mounted on said rotor shaft, and rim sections normally fixed to said hub members and detachable therefrom When worn Without removal of the hub members of said end disks or other parts from the rotor shaft.

5. The combination, With a crushing machine of the hammer mill type having the usual cage or screen, a rotor shaft, spaced disks carried by said rotor shaft, rods carried. by said disks and hammers carried by said rods, of sectional end disks carried by said rotor shaft; said end disks comprising hub members detachably mounted on said rotor shaft, and rim sections to Which said rods are secured shrunk onto said hub members; said rims being renewable when Worn Without removal of the other parts from the rotor shaft.

6. As a new article of manufacture for use With the rotor structure of a crushing machine of the hammer mill type which includes hanuner-carrying rods, a sectional end disk or plate carried by said rotor structure comprising a hub member mounted on the shaft of said rotor structure, and a rim section to which said rods are secured shrunk onto said hub member; said rim section being removably secured to the part carried by the rotor shaft and being detachable and replaceable Without removal of the rest of the parts constituting the rotor structure.

In Witness whereof I have signed this specification.

JAMES E. STINE. 

